An imaging system for generating multi-depth virtual images on a display screen, the imaging system comprising: an image realisation device (14) for forming a source image, projection optics (18) for rendering a display image on the display screen (22), wherein the display image is a virtual image (24, 26, 28) corresponding to the source image, and wherein the image realisation device comprises: an image realisation surface (14) and a light structuring device (16) having a surface with a first and second region, wherein the light structuring device is configured to simulate a first lens having a first focal length on the first region of the surface, wherein the surface and the image realisation surface are arranged such that a first source image formed on a first region of the image realisation surface and projected through the projection optics will render a first display image on the display screen at a first apparent depth (24), and wherein the light structuring device is further configured to simulate a second lens on the second region of the surface, said second lens having a second focal length, and wherein the surface and image realisation surface are arranged such that a second source image formed on a second region of the image realisation surface and projected through the projection optics will render a second display image on the display screen at a second apparent depth (26), wherein the first and second lens are independently configurable.